20495115

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{367}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 38233728

約数和(自身を除く): 17738613

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 73, 85, 153, 219, 255, 365, 367, 657, 765, 1095, 1101, 1241, 1835, 3285, 3303, 3723, 5505, 6205, 6239, 11169, 16515, 18615, 18717, 26791, 31195, 55845, 56151, 80373, 93585, 133955, 241119, 280755, 401865, 455447, 1205595, 1366341, 2277235, 4099023, 6831705, 20495115]

約数ペア:

[(1, 20495115), (3, 6831705), (5, 4099023), (9, 2277235), (15, 1366341), (17, 1205595), (45, 455447), (51, 401865), (73, 280755), (85, 241119), (153, 133955), (219, 93585), (255, 80373), (365, 56151), (367, 55845), (657, 31195), (765, 26791), (1095, 18717), (1101, 18615), (1241, 16515), (1835, 11169), (3285, 6239), (3303, 6205), (3723, 5505)]